Looks like version is set twice. Once explicitly by the shader and once by glcpp_parser_resolve_implicit_version() as we no longer set a bool to skip the implicit call but check the version which is zero in this case.
_glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
const char *es_identifier,
bool explicitly_set)
{
- if (parser->version_resolved)
+ if (parser->version != 0)
return;